Table 4.

Multivariate analysis for hematoma expansion in the training and test cohorts

Variables	Training cohort		Test cohort
	OR (95% CI)	p value	OR (95% CI)	p value
IVH	0.292 (0.096–0.890)	0.030	NA	NA
R-score	2.557 (1.455–4.492)	0.001	3.898 (1.051–14.453)	0.042
Black hole sign	2.710 (0.759–9.677)	0.125	10.326 (1.330–80.186)	0.026
Blend sign	NA	NA	3.985 (0.332–47.897)	0.276
Age	NA	NA	0.930 (0.869–0.996)	0.037
Time from onset to CT	NA	NA	0.557 (0.307–1.011)	0.054

CI, Confidence interval; IVH, Intraventricular hemorrhage; NA, Not available;OR, Odds ratio; R-score, Radiomic score.